Things that go boom. Now to sarah palin, making headlines at a big conservative conference this weekend, firing up the crowd are jabsed a president obama and new york major michael bloomberg. Is this part of a comeback tour? Martha raddatz joins us with more. Reporter: The conference was supposed to be looking forward the future of the republican party. It was not the new republican starts getting all the attention. It was one many thought was fading away. Governor sarah palin. Reporter: Sarah palin is back. And tossing red meat with the best of them. Pail and her big gulp made the biggest splash with her swipe at mayor bloomberg's attempts to limit a sugary drink. The crowd seemed to think even cooler was palin's jab at president obama and democratic proposals on gun control. New background checks? Dandy idea, mr. President. Should have started with yours. Reporter: Few pollsters or pundits believe she would succeed at a bid for national office. You wouldn't know that by listening to her. Barack obama promised the most transparent administration ever. Barack obama, you lied. Reporter: When it came to the business of pic favorites for 2016, it was filibustering senator rand paul who won the ll by taking on the party establishment. The gop of old has grown stale and moss-covered. Reporter: A kompber stone of the gop establishment, john boehner, told me in an exclusive interview, his party needs to better brand its message. Republicans have not done as effective a job as awwe should about talking about our principles. Reporter: The president's two-week charm offensive has been working hard. Not much has happened. Now, to mor headlines for carnival cruise lines.

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